Side Draft EFI for the Chevy LS3

The Speedmaster Side Draft EFI System applies individual throttle body design to the LS3 platform through a modern electronic fuel injection setup. The result is a system that delivers both the visual presence of individual runners and the precision of EFI mapping.

Measured Output

On the LS3 platform, the system produces 546 HP and 520 ft-lbs of torque. These figures reflect what the engineering delivers under controlled conditions, not theoretical estimates.

SEMA Award-Winning Engineering

The Side Draft EFI System earned a 2015 SEMA Award, recognized for the integration of performance engineering with deliberate design. The system was built to perform first and to present second, with the visual result being a consequence of how the engineering was executed.